The Garmin Forerunner 305 GPS unit with heart rate monitor. You can keep tabs on how hard you're working, making sure to neither over or under exert yourself. (Photo by Walter Cruz/Dallas
Langzeittest GPS-Uhr Garmin Forerunner 305 | Laufblog von Thomas Dahmen
Garmin Forerunner 305 GPS-enabled exercise trainer and heart rate monitor at Crutchfield